ARM: dts: msm: enable ulps and disable hx8379c GIP empty scanning

8909 SKUE panel hx8379c will enter GIP empty scanning
when suspend if IOVCC and VCI are not disabled, which
would lead to current leakage. So disable GIP empty
scanning and enable ulps for power saving.

Change-Id: I0141b69562bb2c40428608bf8dce3237319b0168
Signed-off-by: Ray Zhang <rayz@codeaurora.org>